Jim Andrews, KH6HTV, and Alan Maenchen, AD6E (aka KH6TU), staffed an Amateur Radio exhibit on February 26 for Engineering Day 2017 at the Queen Kaahumanu Center in Maui. The main attention-getter was an operating display of Andrews’ 70-centimeter high-definition Amateur Radio digital TV system. Andrews and Maenchen also had a 100 W HF radio on the table as an introduction to discuss Amateur Radi…

There haven’t been sunspots since March 3, other than March 5, when one sunspot appeared for only one day. Also, solar flux values have recently dipped below 70, for the first time since the other side of this solar cycle. Solar flux appears at 70 over the past week: ftp://ftp.swpc.noaa.gov/pub/indices/DSD.txt But this is an approximation. Resolved to 0.10, you can see that it is dipping lower: h…